警报管理器也在日期之后发出通知

Question

我的闹钟管理器工作正常，但每次我在闹钟时间后打开我的应用程序时，它都会触发通知。我怎么能说警报管理器它只发出 1 个通知，并且在警报时间后它应该停止。

public void startTimer(int year,int month, int day,int hour,int minute) {

             int time_year;
             int time_month;
             int time_day;
             int time_hour;
             int time_minute;

            time_minute = minute;
            time_hour = hour;
            time_month = month-1; // BC 0 januar and 11 dezember
            time_day = day;
            time_year = year;

            Calendar calendar = Calendar.getInstance();
            calendar.set(Calendar.YEAR, time_year);
            calendar.set(Calendar.MONTH, time_month);
            calendar.set(Calendar.DAY_OF_MONTH, time_day);
            calendar.set(Calendar.HOUR_OF_DAY, time_hour);
            calendar.set(Calendar.MINUTE, time_minute);
            calendar.set(Calendar.SECOND, 1);

            Intent intent = new Intent(getActivity(), AlarmReceiver.class);
            PendingIntent pendingIntent = PendingIntent.getBroadcast(getActivity().getApplicationContext(), 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);
            AlarmManager alarmManager = (AlarmManager) getActivity().getSystemService(ALARM_SERVICE);
            alarmManager.setExact(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);


        }

报警接收器CLASS

public class AlarmReceiver extends BroadcastReceiver {

    @Override
    public void onReceive(Context context, Intent intent) {
        Log.w("myApp", "ALARM RECEIVER RECEIVED");

        NotificationManager notificationManager = (NotificationManager) context.getSystemService(Context.NOTIFICATION_SERVICE);
        Intent intent1 = new Intent(context,MainActivity.class);
        intent1.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
        //if we want ring on notifcation then uncomment below line//
//        Uri alarmSound = RingtoneManager.getDefaultUri(RingtoneManager.TYPE_NOTIFICATION);
        PendingIntent pendingIntent = PendingIntent.getActivity(context,100,intent1, PendingIntent.FLAG_UPDATE_CURRENT);
        NotificationCompat.Builder builder = new NotificationCompat.Builder(context).
                setSmallIcon(R.drawable.online_icon).
                setContentIntent(pendingIntent).
                setContentText("Ein Event startet bald").
                setContentTitle("Hast du heute schon was vor?").
//                setSound(alarmSound).
        setAutoCancel(true);
        notificationManager.notify(100,builder.build());

    }
}

Answer 1

根据文档，此问题可能会在确切时间和下一次迭代之间的任何时间发生。因此，如果您每天设置下午 2 点，闹钟可能会在下午 2 点到第二天下午 2 点之间响起。

所以添加额外的检查时间是在闹钟之前还是之后

long timeToAlarm = calendar.getTimeInMillis();
if (calendar.getTimeInMillis() < System.currentTimeMillis()){
    timeToAlarm += (24*60*60*1000);
};
alarmManager.setExact(AlarmManager.RTC_WAKEUP, calendar.getTimeInMillis(), pendingIntent);

警报管理器也在日期之后发出通知

Alarm manager make notification also after the date

android

push-notification

alarmmanager

android-alarms